Dell PowerEdge 850 User Manual Page 103
- Page / 148
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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each PCI device for specific IRQ requirements. Table4-2 lists the IRQ assignments.
Table 4-2.IRQAssignmentDefaults
Troubleshooting External Connections
Loose or improperly connected cables are the most likely source of problems for the system, monitor, and other peripherals (such as a printer, keyboard,
mouse, or other external device). Ensure that all external cables are securely attached to the external connectors on your system. See FigureB-1 for the front-
panel connectors and FigureB-2 for the back-panel connectors on your system.
Troubleshooting the Video Subsystem
Problem
l Monitor is not working properly.
l Video memory is faulty.
Action
1. Check the system and power connections to the monitor.
2. Determine whether the system has monitors attached to both the front and rear video connectors.
The system supports only one monitor attached to either the front or rear video connector. When a monitor is connected to the front panel, the back-
panel video, and PS/2 keyboard and mouse connectors are disabled.
If two monitors are attached to the system, disconnect one monitor. If the problem is not resolved, continue to the next step.
3. Check the system and power connections to the monitor.
4. Run the appropriate online diagnostic test. See "Using Server Administrator Diagnostics" in "Running System Diagnostics."
If the tests run successfully, the problem is not related to video hardware.
If the tests fail, see "Getting Help."
Troubleshooting the Keyboard
Problem
l System message indicates a problem with the keyboard.
IRQ Line
Assignment
IRQ0
System timer
IRQ1
Keyboard controller
IRQ2
Interrupt controller 1 to enable IRQ8 through IRQ15
IRQ3
Available
IRQ4
Serial port 1 (COM1 and COM3)
IRQ5
Available
IRQ6
Available
IRQ7
Available
IRQ8
Real-time clock
IRQ9
ACPI functions (used for power management)
IRQ10
Available
IRQ11
Available
IRQ12
PS/2 mouse port (available if the mouse is disabled through the System Setup program)
IRQ13
Math coprocessor
IRQ14
IDE optical drive controller (available if IDE CDROM controller is disabled through the System Setup program)
IRQ15
Reserved (available if IDE CDROM controller is disabled through the System Setup program)
- Abbreviations and Acronyms 1
- System Board Jumpers 2
- System Board Connectors 3
- SCSI Backplane Connectors 4
- I/O Connectors 6
- Parallel Connector 7
- Video Connector 8
- USB Connectors 9
- Integrated NIC Connectors 9
- Introduction 11
- System Status Indicators 12
- Power Indicator Codes 15
- NIC Indicator Codes 15
- System Messages 16
- System Beep Codes 18
- Warning Messages 19
- Diagnostics Messages 20
- Alert Messages 20
- Before You Begin 21
- Troubleshooting a NIC 28
- System Fans 45
- Removing the Back System Fan 46
- Removing Memory Modules 52
- Installing a Processor 54
- Installing a RAC Card 55
- Front-Panel Drive Inserts 59
- Diskette Drive 60
- 5.25-Inch Drives 61
- Hot-Plug SCSI Hard Drives 68
- Riser Card Connectors 84
- USB Connector 88
- Integrated NIC Connector 88
- Network Cable Requirements 89
- Front-Panel Features 92
- Back-Panel Features 93
- NIC Indicators 93
- Start-Up Routine 102
- Checking the Equipment 102
- Troubleshooting the Keyboard 103
- Troubleshooting the Mouse 104
- Troubleshooting a NIC 105
- Inside the System 106
- Opening the System 106
- Closing the System 107
- Problem 108
- Troubleshooting a Fan 110
- Cooling Shroud 117
- System Battery 118
- Fan Assembly 119
- PCI Fan Module 120
- Power Supply 120
- Expansion Cards 121
- Removing an Expansion Card 122
- Riser Card 123
- System Memory 123
- Installing Memory Modules 124
- Processor 125
- Installing Drives 128
- Configuring the Boot Drive 129
- Hard Drives 129
- Installing a Hard Drive 131
- Back to Contents Page 132
- Recommended Tools 133
- Control Panel Assembly 133
- Daughter Card 134
- System Board 135
- Getting Help 138
- Problems With Your Order 139
- Product Information 139
- Before You Call 140
- Contacting Dell 140
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